Hello Lyal -- We are not 100 percent sure on this one, but it appears you have a burnished iron German medal used as a token or reminder to collect unused rubber during the bleak years of World War I.

Altgummi sammlung directly translated means scrap rubber collection. Rubber, and most everything else, was in short supply in Germany during World War I.

Determining values for such items is difficult. There were thousands of different German medals produced during the early 20th century, and there is a small collector base that seeks them out. The sample in our picture comes from Munzenversand Hardelt in Kaiserslautern, Germany where it is for sale for 10 euros, about $13 US dollars. I have seen the same medal for sale at other dealers for $65 US dollars. As always, value varies with condition.

Our best guess, then is that your piece is worth about $15 retail. A dealer would usually pay less than half that amount to buy it from you.